im on ee and its clear so think its the phone take it back if i was you

Thanks that is useful. I wondered if it was an EE issue as I had problems with their hd voice codec on a different android handset. But I have just done a lot of testing and it definitely is only when on the normal internal speaker, which really makes me think it is a hardware fault.

Mine has had good call quality on the hd voice codec, but it drops to a lower codec really quickly during a call, not sure why. and that seams to have a little static. Cant remember if this was what calls were normally like on my old phone though.

Mine has had good call quality on the hd voice codec, but it drops to a lower codec really quickly during a call, not sure why. and that seams to have a little static. Cant remember if this was what calls were normally like on my old phone though.

Hmmmm. I tested again today and the noise is all gone: calls are crystal clear. I really don't understand what is going on, or whether it is software or hardware related.

I suppose it is best to swap it out before I have had it for too long, just in case?

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